Get file infos php

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Источник

Fileinfo Functions

The results of this function seem to be of dubious quality.

eg
1) a Word doc returns:
‘application/msword application/msword’
. ok not too bad, but why does it come back twice?

3) a text doc that starts with the letters ‘GIF’ comes back as:
‘image/gif’
(just like in DanielWalker’s example for the unix ‘file’ command)

I had better results using the PEAR ‘MIME_Type’ package. It gave proper answers for 1 & 3 and identified the PHP file as ‘text/plain’ which is probably better than a false match for C++

Both finfo_file and MIME_Type correctly identified my other two test files which were a windows exe renamed with .doc extension, and a PDF also renamed with .doc extension.

/**
* @var str => $file = caminho para o arquivo (ABSOLUTO OU RELATIVO)
* @var arr => $file_info = array contendo as informações obtidas do arquivo informado
*/
private $file ;
private $file_info ;

/**
* @param str => $file = caminho para o arquivo (ABSOLUTO OU RELATIVO)
*/
public function get_file ( string $file ) clearstatcache ();
$file = str_replace (array( ‘/’ , ‘\\’ ), array( DIRECTORY_SEPARATOR , DIRECTORY_SEPARATOR ), $file );
if(! is_file ( $file ) && ! is_executable ( $file ) && ! is_readable ( $file )) throw new \ Exception ( ‘O arquivo informado não foi encontrado!’ );
>
$this -> file = $file ;
$this -> set_file_info ( $this -> file );
return $this ;
>

/**
* @param str => $index = se for informado um indice é retornada uma informação específica do arquivo
*/
public function get_info ( $index = » ) if( $this -> get_file_is_called ()) if( $index === » ) return $this -> file_info ;
>
if( $index != » ) if(! array_key_exists ( $index , $this -> file_info )) throw new \ Exception ( ‘A informação requisitada não foi encontrada!’ );
>
return $this -> file_info ;
>
>
>

/**
* @todo verifica se o método get_file() foi utilizado para informar o caminho do arquivo
*/
private function get_file_is_called () if(! $this -> file ) throw new \ Exception ( ‘Nenhum arquivo foi fornecido para análise. Utilize o método get_file() para isso!’ );
return false ;
>
return true ;
>

/**
* @todo preencher a array com as infos do arquivo
*/
private function set_file_info () $this -> file_info = array();
$pathinfo = pathinfo ( $this -> file );
$stat = stat ( $this -> file );
$this -> file_info [ ‘realpath’ ] = realpath ( $this -> file );
$this -> file_info [ ‘dirname’ ] = $pathinfo [ ‘dirname’ ];
$this -> file_info [ ‘basename’ ] = $pathinfo [ ‘basename’ ];
$this -> file_info [ ‘filename’ ] = $pathinfo [ ‘filename’ ];
$this -> file_info [ ‘extension’ ] = $pathinfo [ ‘extension’ ];
$this -> file_info [ ‘mime’ ] = finfo_file ( finfo_open ( FILEINFO_MIME_TYPE ), $this -> file );
$this -> file_info [ ‘encoding’ ] = finfo_file ( finfo_open ( FILEINFO_MIME_ENCODING ), $this -> file );
$this -> file_info [ ‘size’ ] = $stat [ 7 ];
$this -> file_info [ ‘size_string’ ] = $this -> format_bytes ( $stat [ 7 ]);
$this -> file_info [ ‘atime’ ] = $stat [ 8 ];
$this -> file_info [ ‘mtime’ ] = $stat [ 9 ];
$this -> file_info [ ‘permission’ ] = substr ( sprintf ( ‘%o’ , fileperms ( $this -> file )), — 4 );
$this -> file_info [ ‘fileowner’ ] = getenv ( ‘USERNAME’ );
>

/**
* @param int => $size = valor em bytes a ser formatado
*/
private function format_bytes ( int $size ) $base = log ( $size , 1024 );
$suffixes = array( » , ‘KB’ , ‘MB’ , ‘GB’ , ‘TB’ );
return round ( pow ( 1024 , $base — floor ( $base )), 2 ). » . $suffixes [ floor ( $base )];
>
>

var_dump ((new FileInfoTool )-> get_file ( ‘sitemap.xml’ )-> get_info ());
?>

Источник

pathinfo

pathinfo() returns information about path : either an associative array or a string, depending on flags .

Note:

For information on retrieving the current path info, read the section on predefined reserved variables.

Note:

pathinfo() operates naively on the input string, and is not aware of the actual filesystem, or path components such as » .. «.

Note:

On Windows systems only, the \ character will be interpreted as a directory separator. On other systems it will be treated like any other character.

pathinfo() is locale aware, so for it to parse a path containing multibyte characters correctly, the matching locale must be set using the setlocale() function.

Parameters

If present, specifies a specific element to be returned; one of PATHINFO_DIRNAME , PATHINFO_BASENAME , PATHINFO_EXTENSION or PATHINFO_FILENAME .

If flags is not specified, returns all available elements.

Return Values

If the flags parameter is not passed, an associative array containing the following elements is returned: dirname , basename , extension (if any), and filename .

Note:

If the path has more than one extension, PATHINFO_EXTENSION returns only the last one and PATHINFO_FILENAME only strips the last one. (see first example below).

Note:

If the path does not have an extension, no extension element will be returned (see second example below).

Note:

If the basename of the path starts with a dot, the following characters are interpreted as extension , and the filename is empty (see third example below).

If flags is present, returns a string containing the requested element.

Examples

Example #1 pathinfo() Example

$path_parts = pathinfo ( ‘/www/htdocs/inc/lib.inc.php’ );

echo $path_parts [ ‘dirname’ ], «\n» ;
echo $path_parts [ ‘basename’ ], «\n» ;
echo $path_parts [ ‘extension’ ], «\n» ;
echo $path_parts [ ‘filename’ ], «\n» ;
?>

The above example will output:

/www/htdocs/inc lib.inc.php php lib.inc

Example #2 pathinfo() example showing difference between null and no extension

$path_parts = pathinfo ( ‘/path/emptyextension.’ );
var_dump ( $path_parts [ ‘extension’ ]);

$path_parts = pathinfo ( ‘/path/noextension’ );
var_dump ( $path_parts [ ‘extension’ ]);
?>

The above example will output something similar to:

string(0) "" Notice: Undefined index: extension in test.php on line 6 NULL

Example #3 pathinfo() example for a dot-file

The above example will output something similar to:

Array ( [dirname] => /some/path [basename] => .test [extension] => test [filename] => )

Example #4 pathinfo() example with array dereferencing

The flags parameter is not a bitmask. Only a single value may be provided. To select only a limited set of parsed values, use array destructuring like so:

[ ‘basename’ => $basename , ‘dirname’ => $dirname ] = pathinfo ( ‘/www/htdocs/inc/lib.inc.php’ );

var_dump ( $basename , $dirname );
?>

The above example will output something similar to:

string(11) "lib.inc.php" string(15) "/www/htdocs/inc"

pathinfo

pathinfo() возвращает информацию о path в виде ассоциативного массива или строки в зависимости от options .

Список параметров

Если указан, то задает для возврата отдельный элемент: один из следующих PATHINFO_DIRNAME , PATHINFO_BASENAME , PATHINFO_EXTENSION и PATHINFO_FILENAME .

Если options не указан, то возвращаются все доступные элементы.

Возвращаемые значения

Если параметр options не передан, то возвращаемый ассоциативный массив ( array ) будет содержать следующие элементы: dirname, basename, extension (если есть) и filename.

Замечание:

Если path содержит больше одного расширения, то PATHINFO_EXTENSION возвращает только последнее и PATHINFO_FILENAME отрезает только последнее расширение. (смотрите пример ниже).

Замечание:

Если path не содержит расширения, то не будет возвращен элемент extension (см. ниже второй пример).

Если указан параметр options , будет возвращена строка ( string ), содержащая указанный элемент.

Список изменений

Версия	Описание
5.2.0	Добавлена константа PATHINFO_FILENAME .

Примеры

Пример #1 Пример использования функции pathinfo()

$path_parts = pathinfo ( ‘/www/htdocs/inc/lib.inc.php’ );

echo $path_parts [ ‘dirname’ ], «\n» ;
echo $path_parts [ ‘basename’ ], «\n» ;
echo $path_parts [ ‘extension’ ], «\n» ;
echo $path_parts [ ‘filename’ ], «\n» ; // начиная с PHP 5.2.0
?>

Результат выполнения данного примера:

/www/htdocs/inc lib.inc.php php lib.inc

Пример #2 Пример с pathinfo() , показывающий разницу между null и отсутствием расширения.

$path_parts = pathinfo ( ‘/path/emptyextension.’ );
var_dump ( $path_parts [ ‘extension’ ]);

$path_parts = pathinfo ( ‘/path/noextension’ );
var_dump ( $path_parts [ ‘extension’ ]);
?>

Результатом выполнения данного примера будет что-то подобное:

string(0) "" Notice: Undefined index: extension in test.php on line 6 Notice: Undefined index: extension in test.php on line 6 NULL

Примечания

Замечание:

Подробнее о получении информации о текущем пути, обратитесь к секции » Предопределенные зарезервированные переменные».

Замечание:

pathinfo() учитывает настройки локали, поэтому для корректной обработки пути с многобайтными символами должна быть установлена соответствующая локаль с помощью функции setlocale() .

Смотрите также

dirname() — Возвращает имя родительского каталога из указанного пути
basename() — Возвращает последний компонент имени из указанного пути
parse_url() — Разбирает URL и возвращает его компоненты
realpath() — Возвращает канонизированный абсолютный путь к файлу

Источник

Get file infos php